Compare phones
| Global Score | |
| 76.2 | 77.7 |
| Basic Information | |
| Asus | Samsung |
| -- | Android 10 |
| 2017-02-15 | 2020-06-19 |
| 6.07 x 3.03 x 0.31 inches | 6.44 x 2.96 x 0.35 inches |
| 6.00 ounces | 6.77 ounces |
| Black, Pink and Silver | Black, Blue, Red and White |
| Metal | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| AMOLED | TFT |
| 401 pixels per inch | 270 pixels per inch |
| 500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.5 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Samsung Exynos 850 chipset |
| ARM Cortex-A53, 64-bit (Octa-Core 2000 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 506 GPU | Mali-G76 GPU |
| 9.09 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| microSDXC (up to 1,95 TB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 17.06 | 9.84 |
| Camera | |
| 12.00 MP + 13.00 MP | 48.00 MP + 13.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 25.00mm focal length | 26.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 9.68 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.6 | 6.7 |
| Battery Life | |
| 5000mAh Li - Ion Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 6.8 |
| Other Features | |
| Bluetooth 4.2, EDR | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Galaxy A21s has a score of 77.7, which is just a bit better than Asus ZenFone 3 Zoom's 76.2 overall score. Although Galaxy A21s is notably newer than the Asus ZenFone 3 Zoom, it's heavier and somewhat thicker. The Samsung Galaxy A21s's processing unit is very similar to the Asus ZenFone 3 Zoom one, and although the Samsung Galaxy A21s has a lower amount of RAM, they both have the same number of cores.
Asus ZenFone 3 Zoom counts with a much better screen than Galaxy A21s, because although it has a bit smaller screen, it also counts with a greater pixels density and a higher resolution of 1080 x 1920 pixels. Galaxy A21s takes much better videos and photos than Asus ZenFone 3 Zoom, because although it has a smaller camera aperture, and they both have the same 1920x1080 video definition and the same video frame rate, the Galaxy A21s also counts with a back-facing camera with lot more megapixels and a way larger back-facing camera sensor which offers a much better image and video quality.
The Asus ZenFone 3 Zoom counts with a much greater memory capacity to install applications and games than Galaxy A21s, because it has more internal memory and a slot for external memory cards that admits up to 1,95 TB. Galaxy A21s's battery performance is just as good as the battery duration in Asus ZenFone 3 Zoom.
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